B2 informal If you have an upset stomach you feel slightly ill, especially because of something you

中文解释

形容肚子不舒服（尤其因为吃喝的东西引起的不适） I have an upset stomach/tummy - serves me right for eating so much. 我肚子不舒服——我这是自作自受，谁让自己吃得太多。